PDF malware analysis — malicious · 89aa1c8b03b4534a

MALICIOUS

PDF

6.7 KB

MD5: fbd5545003196d8a9b85d3ac81af6881 SHA-1: 8d397d993a3ee37570f4b16044e2ee2a88593ba1 SHA-256: 89aa1c8b03b4534a6495d12da5d04f34241ee61a50b6bcd1326dd52cd637fd4f

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript streams, flagged by multiple heuristics as suspicious. The ML classifier strongly indicates maliciousness. The embedded JavaScript is heavily obfuscated, but appears to be designed to download and execute a second-stage payload from the provided URL. The presence of obfuscated JavaScript and an embedded URL strongly suggests a downloader or droppper functionality.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www1.powersuiterbtw.it.cx/?irv0ez6g=jdXjlKLfrsyW5ODJr6ulnqSL5tbgtKGj22WZrWugoqbci%2BbmspqnmKKVpaido6hW0e1zmKCfrovT1dfbsbi%2Fpprn0tazY4vtWg%3D%3D

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `2368a49ce4556fdd53a7c0083c17385e5cca9380e5e7d7103498e0411cbe626c`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1D4	6082 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s). Carved artifact contains 1 long hex-escaped blob(s).
`javascript_obj0005_001.js` `a896df1f0ecd958a69b60831502ba7d664e7ea4ea1d396fb725300421210b976`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1F7	6365 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s). Carved artifact contains 1 long hex-escaped blob(s).

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